Possible BGP hijack

Beginning at 2020-08-27 20:58:48, we detected a possible BGP hijack.

Prefix 191.254.0.0/15, Normally announced by AS27699 TELEFONICA BRASIL S.A, BR

Starting at 2020-08-27 20:58:48, a more specific route (191.255.10.0/24) was announced by ASN 12445.

This was detected by 5 BGPMon peers.

Expected
Start time: 2020-08-27 20:58:48 UTC
Expected prefix: 191.254.0.0/15
Expected ASN: 27699 (TELEFONICA BRASIL S.A, BR)
Event Details
Detected advertisement: 191.255.10.0/24
Detected Origin ASN 12445 (SPIDERNET-AS, IT)
Detected AS Path 28642 267469 28329 13786 28716 12445
Detected by number of BGPMon peers: 5

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